Bolt connecting device

Abstract

The utility model relates to a bolt connecting device which comprises a bolt, a sleeving piece, an annular piece, a connecting pipe and a nut, the sleeving piece is arranged on a rod body of the bolt in a sleeving mode, the sleeving piece comprises a matching portion and an annular portion, the diameter of the annular portion is smaller than that of the matching portion, the annular piece is in threaded connection with the rod body and contained in the annular portion, the annular piece is connected with the rod body, and the connecting pipe is connected with the nut. A gap is formed between the annular part and the inner wall of the annular part, the rod body is sleeved with the connecting pipe, the first end of the connecting pipe is inserted into the gap and connected with the annular part, the second end of the connecting pipe is arranged in the containing cavity of the nut and connected with the nut, and a strip-shaped groove is formed between the first end and the second end and connected with the annular part. The strip-shaped grooves are arranged in parallel and surround the rod body, and the nut is in threaded connection with the rod body. According to the bolt connecting device, materials without screw holes can be conveniently locked or released, a nut does not need to be operated at the end of the bolt for locking, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a bolt connection device. Background Art

[0002] A bolt usually consists of three parts: a bolt rod, a screw head, and a thread. When a bolt is fastened to a material, it needs to be fitted with a nut or locked into a screw hole. When the material does not have a screw hole, it needs to be tightened with a nut or other fastener. For example, the patent with announcement number CN203114819U discloses a nut-free bolt. After the bolt passes through the object to be connected, the elastic rubber sleeve is flipped over so that it wraps the bottom end of the screw portion, thereby increasing the radius of the bottom end of the screw portion, thereby achieving the effect of preventing the connected object from falling off without using a nut. However, the above-mentioned bolt needs to operate the rubber sleeve when tightening. If the material is not easy to operate the rubber sleeve or nut from the back, it is difficult to tighten. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides a bolt connection device which does not require backside operation and does not require the provision of screw holes.

[0004] The specific technical solution is as follows: A bolt connection device includes a bolt, a sleeve, a ring, a connecting pipe and a nut, the sleeve is sleeved on the rod body of the bolt, the sleeve includes a matching part and an annular part, the diameter of the annular part is smaller than the matching part, the annular part is threadedly connected to the rod body and accommodated in the annular part, the annular part is connected to the rod body, and there is a gap between the annular part and the inner wall of the annular part, the connecting pipe is sleeved on the rod body, the first end of the connecting pipe is inserted into the gap, the first end is connected to the annular part, the second end is arranged in the accommodating cavity of the nut, the second end is connected to the nut, a strip groove is provided between the first end and the second end, a plurality of strip grooves are arranged in parallel and around the rod body, and the nut is threadedly connected to the rod body.

[0005] In some embodiments, the sleeve has a top surface that abuts against a side wall of the bolt end portion.

[0006] In some embodiments, the annular member is connected to the rod body by welding, and the connecting pipe is connected to the nut and the annular portion by welding.

[0007] In some embodiments, the cross-section of the mating portion is polygonal.

[0008] In some embodiments, the nut has a threaded hole, the threaded hole is coaxially arranged with the accommodating cavity, and the inner diameter of the accommodating cavity is larger than the inner diameter of the threaded hole.

[0009] In some embodiments, the end portion of the bolt has a slot.

[0010] In some embodiments, the connecting tube is cylindrical.

[0011] The technical effect of the utility model: the bolt connection device of the utility model can easily lock or release materials without screw holes, without operating the nut to lock the bolt end, and has wider applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a bolt connection device according to an embodiment of the present invention.

[0013] Figure 2 This is an exploded view of a bolt connection device according to an embodiment of the present invention.

[0014] Figure 3 This is a schematic diagram of a bolt connection device in an embodiment of the present invention when locked.

[0015] Figure 4 This utility model Figure 3 Enlarged view of part A. DETAILED DESCRIPTION

[0016] The essential features and advantages of the present invention are further described below with reference to examples, but the present invention is not limited to the examples listed.

[0017] like Figures 1 to 4As shown, a bolt connection device of this embodiment includes a bolt 1, a sleeve 2, an annular member 3, a connecting pipe 4 and a nut 5. The sleeve 2 is sleeved on the rod 11 of the bolt 1. The sleeve 2 includes a matching portion 21 and an annular portion 22. The diameter of the annular portion 22 is smaller than that of the matching portion 21. The annular member 3 is threadedly connected to the rod 11 and accommodated in the annular portion 22. The annular member 3 is connected to the rod 11, and a gap 6 is formed between the annular member 3 and the inner wall of the annular portion 22. The connecting pipe 4 is sleeved on the rod 11. The first end 41 of the connecting pipe 4 is inserted into the gap 6. The first end 41 is connected to the annular portion 22, and the second end 42 is arranged in the accommodating cavity 51 of the nut 5. The second end 42 is connected to the nut 5. A strip groove 43 is provided between the first end 41 and the second end 42. A plurality of strip grooves 43 are arranged in parallel and around the rod 11. The nut 5 is threadedly connected to the rod 11. In the above technical solution, a bolt 1, a socket 2, a ring 3, a connecting tube 4, and a nut 5 are formed into a unit. When applicable, the unit is inserted into a through hole 101 in a material 10, which is not threaded. To tighten the material 10, a tool is first used to engage the mating portion 21, keeping it stationary. The bolt 1 is then rotated, causing the nut 5 to move toward the end of the bolt, pressing against the second end 42 of the connecting tube 4. Due to the strip groove 43, the connecting tube 4 is squeezed and deformed between the first and second ends, forcing the deformed portion against the material 10, thereby clamping the material 10. To release the material 10, the bolt 1 is rotated in the opposite direction, causing the nut 5 to move toward the end of the bolt 1, and the connecting tube 4 to return to its original shape. This technical solution facilitates the tightening or loosening of materials without screw holes, eliminating the need to tighten the nut at the end of the bolt, thus providing wider applicability.

[0018] In this embodiment, the socket 2 has a top surface 23, which abuts against the side wall 121 of the end portion 12 of the bolt 1, so that after the ring member 3 is connected to the bolt 1, the socket 2 presses the bolt 1. The ring member 3 is connected to the rod body 11 by welding. The ring member 3 is first screwed onto the rod body 11 by threading and then fixed by welding. The connecting pipe 4 is connected to the nut 5 and the ring portion 22 by welding. The weld 20 in the accompanying drawings is formed by welding. The cross-section of the matching portion 21 is polygonal, so that it can be easily positioned by a common hexagonal socket. The nut 5 has a threaded hole 52, which is coaxially arranged with the accommodating cavity 51. The inner diameter of the accommodating cavity 51 is larger than the inner diameter of the threaded hole 52. The inner diameter of the connecting pipe 4 is larger than the inner diameter of the threaded hole 52, so that it can be in the accommodating cavity 51. The end portion 12 of the bolt 1 has a slot 122, which facilitates the insertion of tools to rotate the bolt. The connecting pipe 4 is cylindrical, so it can be sleeved on the rod body and is easy to deform.

[0019] A bolt connection device in this embodiment can easily lock or release materials without screw holes, without the need to operate a nut to lock the bolt end, and has wider applicability.

[0020] It should be noted that the above preferred embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A bolt connection device, characterized in that: It includes a bolt, a socket, a ring, a connecting pipe and a nut. The socket is sleeved on the rod body of the bolt. The socket includes a matching part and an ring part. The diameter of the ring part is smaller than the matching part. The ring part is threadedly connected to the rod body and accommodated in the ring part. The ring part is connected to the rod body. There is a gap between the ring part and the inner wall of the ring part. The connecting pipe is sleeved on the rod body. The first end of the connecting pipe is inserted into the gap. The first end is connected to the ring part. The second end is arranged in the accommodating cavity of the nut. The second end is connected to the nut. A strip groove is provided between the first end and the second end. Several strip grooves are arranged in parallel and around the rod body. The nut is threadedly connected to the rod body.

2. The bolt connection device according to claim 1, characterized in that: The sleeve member has a top surface which abuts against the side wall of the bolt end portion.

3. The bolt connection device according to claim 2, characterized in that: The annular member is connected to the rod body by welding, and the connecting pipe is connected to the nut and the annular portion by welding.

4. The bolt connection device according to claim 1, characterized in that: The cross section of the matching portion is polygonal.

5. The bolt connection device according to claim 1, characterized in that: The nut has a threaded hole, which is coaxially arranged with the accommodating cavity, and the inner diameter of the accommodating cavity is larger than the inner diameter of the threaded hole.

6. The bolt connection device according to claim 1, characterized in that: The end portion of the bolt is provided with a clamping groove.

7. The bolt connection device according to claim 1, characterized in that: The connecting pipe is cylindrical.

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